Trolley pole head



Nov. 2l, 1944. T, R, R|DEOUT- 2,363,362

TROLLEYv POLE `HEAD Original Filed July 24, 194].

ATTOR EY Patented Nov. 21, 1944 "2363362. TROLLEYPGDEJHEAB' 'Theodore RfRideout, Pittsburgh, Pa., assigner to Westinghouse Electric Manufacturing Company, East Pittsburgh, Pa., 'a 'corporation' 'of Pennsylvania Griginal `application .luly 24, 13414, #Serial-*,VINo. lk 403,801. Divided-and this application-Decem ber 12, 1942, -Serial No. 4,681,760

invention relates, generally, to `current .'collectors and has reference, `in particular, to a trolley pole head for use on trolley buses or r'other.vehicles for collecting current from an 'overhead conductor.

lThis is a division of my application Serial No.

493,801, filed on July '24, 41941, now Patent No. 2,326,065, dated August 3, 1943, and assigned to the assignee of the present invention.

vGenerally statedL'it is an object of my invention"to'providev a simple and .inexpensive trolley Apolehead which is 'inexpensive to manufacture andeas'y to install.

More speciiically, it is an object of my invention to provide a trolley pole head having an ,I

'improved' body' member for supporting a pivotally'mounted slider shoe and also having a, de-

tachable resilient connection with a 'trolley pole for trolley pole` extension for minimizing shocks when the current collector strikes an irregularity in the overhead` system or some other obstruction.

' 4Another object of my invention is to providea resilient pole head mounting wherein a resilient bushing and 'connecting'mean's Amay be positioned {between the trolley p'ole or "trolley pole extension and the' 'body member. 4o'f the pole head.

ffStill another object of my invention is to .prol vide an -easily vdetachable connection "between 'a *pole head -body member and the resilientmaterial ofV ra vpole head mounting. Yet another lobject -of my yinvention is to provide 'for-detachably `connecting a Vtrolley pole head to aresilient `member ber. I

It is also an object of my invention to provide an inexpensive pole head structure having a resilient mounting with la metallic member recessed rin a resilient 'material for eliecting `a detachable connection between the resilient material and one rof the -resiliently related parts.

, Other objects willin part be obvious, `and will in part appear hereinafter. l

In practicing my invention a simple andv ingexpensive vpole head body structure -for support on 5a ftrolley 'pole mem- Y ing aqslider'shoe or other current collector device on a, trolley pole 'mayrcomprise a Vtubular member toreceive an :elongated trolley pole support member and having a socket for receiving a sliderwshoe support member. A resilient guard member having an inclined front guard surface is interposed between the body member and the slider shoe, and is secured thereto by means of the slider shoe support. A resilient bushing may o be interposed between the body portion of the oi Fig. 3.

vh'pole head and trolley pole support member having .metallic vsecuring meansforrned therein `to which the pole Yhead body member may be de- -tachably secured.-

For a more complete understanding of the .nature and scope of my invention reference may be had 'to .the following" .detailed description, which Amay :be fread "in connection with the accompanying drawing 'in which; v

Figure y1 is .a .side elevational view of a trolley pole head embodying `the .principal features of the invention;

Fig. `2 is a, rear elevational view .partly broken fout and `partly y.section of the poley head of rc-Fie `3isl a partly .sectioned side `elevational View f 'the .pole need of Fig. 1 with' the slider shoe and guarfmember removed; and

' Fig. 4 fis a sectional view 'taken along the line Referring 'to Figs. 1 and 2, the reference numeral I0 may denote generally a trolley .pole

head having a sliderishoell detachably secured toa swivel '|'2'by 4bolts i3 and ypiv'ota'lly mounted won''a"subs't'an'i'liaflly vertical support member "i4 for engaging a trolley conductor 15.V 'The support 'member |54 may 'be mounted on 'a' trolley po'le' (not shown)` 'by means 'of a body vmember vvi6, `"vi/'nich may -be `secured to the -trolley pole 'by means of an 4elongated trolley pole extension or support 4memberl Il lwhich vvis ladapted to t wi-thin 4thefendof the trolley pole vin a well known ix'ia'nner.'l Theb'ddy lmember 'I6 may be provided `with'a socket "member |-8 for receiving 'the support `meznberill. A suitable A-guard member yI9 may lbe positioned between the 'slider shoe and the fbo'dy member I6 to prevent the slider shoe ro'm' becorrin'g'fentangled vin support vwires and the lik'e.

Asshown inFigs. 'l and'S, the pole head vbody member |6 may comprise van elongated tubular member 2210 having jopenings 2| and 22 therein sev ypositioned Ion opposite sides 'adjacent one end` as to receiveflthe 1.tubular socket member `|-8 which 'may ibe :secured-'thereto in inclined relation, inanysui-table tmaniier such -fa's by welding. l In "order to provideY a resilient 'connection between lthe'pole `headlbocl'y member 'I6 and trolley pole'extens'ion Ior support'rmember 'I'I and in- 1 sulatethe'm f-rom' each other, :a bushing 23 of a body member. Deformation of the bushing is thereby limited, since the principal stresses will be those of compression. The support-member l1 may be provided with a recess or notch 24 on one side and the bushing 23 may be provided with a corresponding protuberance 25 positioned in the recess to assist in locking the bushing to the support member.

In order to detachably secure the body member I6 to the bushing 23, the outer surface of the bushing may be provided with recessed portions 26 as shown in Figs. 3 and 4 for receiving connecting mea-ns such as the metal plates 21. The plates 21 may be merely positioned in the recesses after they are formed; they may be formed integral therewith during the molding process or they may bel secured thereto in any other suitable manner. The recesses 26 may be so positioned relative to one another as to leave ribs 28 of the resilient. material therebetween which resist movement of the plates 21 peripherally on the bushing. Screws 30 may be utilized to secure the body member ylli .to the plates 21, thereby detachably securing the pole head body member I6 to the trolley pole support or 4extension l1 and affording a yielding connection therewith. A back up plate 32 may be provided within the tubular member 20, if desired, to prevent undue deformation of the resilient material 23 and thus. increase the resistance of the resilient material against the shear stresses set up when forces are applied to the body member IB tending to separate it from the trolley pole extension or support member l1. In order to provide an additional connection between ther tubular member ZIJ and the resilient material 23, the tubular member 20 may be deformed at one or more places to provide protuberances 33 on the inner side which interlock with the resilient material and assist in securing the member 2l!V thereto.

From the above description and accompanying drawing, it will be `apparent that I have provided a simplified pole head or current collector Which is inexpensive to manufacture and is easy to install. The tubular construction of the body member readily lends itself to the production manufacturing. The resilient mounting of the tubular pole head body member yon the trolley pole extension is effected in a simple and inexpensive manner. The connection between the connecting metal plates and the resilient bushing may be permanent by vulcanizing or the like, or they may be merely positioned in the recesses therein, and the tubular body may be easily attached thereto or detached therefrom for repairs. Different current collectors may be used on the same trolley pole extension without any trouble. Since the resilient bushing and securing means are enclosed by the tubular pole head body, deformation of the bushing is minimized and the principal stresses are in compres- Y of the matter contained in the above description or shown in the accompanying drawing shall be considered as illustrative and not in a limiting sense.

I claim as my invention:

1. The combination in a trolley pole head structure, of a trolley pole extension having a bushing of resilient material positioned about one end, metallic securing means recessed in the resilient material, a relatively thin sheet metal pole head member positioned about at least a portion of Ithe bushing andthe securing means, and means projecting through the pole head member detachably securing the pole head member to the securing means.

2. A current collector mounting comprising, a trolley pole member, a bushing of resilient material positioned about said trolley pole member, a metallic plate positioned adjacent and secured in substantially xed relation to the surface of the resilient material, a pole head body member formed of relatively thin sheet metal lpositioned about the said bushing and plate, and

means to detachably secure the pole head body member to the said plate.

3. A resilient mounting comprising, an elongated support member,l a bushing of a resilient material positioned about a portion of the support member, metallic securing means recessed in the outer surface of the bushing, a socket member positioned about the bushing and metallic securing means, and means detachably securing the securing means tothe socket member.

4. A resilient mounting comprising, an elongated cylindrical body, a substantially cylindrical bushing of a resilient material secured about the body and having a recess in the outer surface thereof, a rigid member positioned in the recess, a tubular body substantially enclosing the bushing, rigid member and a portion of the cylindrical body, and. means projectable through a portion of the tubular body detachably connecting the rigid member to the tubular body.

5. A resilient mounting for securing a socket to a support member comprising, an elongated tubular bushing of a resilient material secured to the support member and provided with 1ongitudinally extending ribs and transverse portions of the resilient material dening recesses therein, metal plates positioned in the recesses, a socket substantially enclosing the metal plates and bushing, and screws projecting through the socket into the metal plates to detachably secure the socket about the bushing.

6. A resilient mounting comprising, an elongated cylindrical support, a substantially cylindrical bushing of resilient material secured about the support adjacent one end and having a plurality of longitudinally extending ribs of the material and peripheral shoulders adjacent ,the ends defining a plurality of recesses therein, an arcuate metal plate positioned in and substantially filling each recess, a tubular body member positioned about and substantially enclosing the metal plates and bushing, and means connecting the metal plates to the body member.

'IHEODORE` R. RIDEO'U T. 

